Re: Octave's contour function

[Paul Kienzle]

Ah, the bane of Matlab compatibility!  The CVS archive now has a new
parameter order for the contour function:

        contour (x, y, z, n)

Sorry!

Paul Kienzle
address@hidden

On Thu, Dec 07, 2000 at 05:36:32PM -0500, Jonathan M Hill wrote:
> Hello;
> 
>      I was just playing with the contour function the other day and
> managed to make a simple example.  I used the online help to
> construct the  example.  I'm sorry that I don't have much experience
> with this.
> 
> octave:2> help contour
>  usage: contour (z, n, x, y)
> 
>  See also: plot, semilogx, semilogy, loglog, polar, mesh, contour,
>            bar, stairs, gplot, gsplot, replot, xlabel, ylabel, title
> 
>      Here is what I discovered; z is a rectangular matrix, the
> simplest use assumes (0,0) to be the lowest corner and uses the matrix
> size to get the other.  n is the number of isolines to draw, I think the
> default is 11 lines.
> 
> octave> z = [
> 1 1 1;
> 1 1 2];
> octave> contour(z)
> 
>      The x and y terms are optional vectors, either column or row type.
> I think these are used to define other values for the x and y axes.
> 
> octave> contour(z, 4, [0 1], [0 0.5 1])
> 
>      Perhaps a few others have some comments to make?
> 
>                                               Jonathan Hill 
>                                               address@hidden
> 
> On Thu, 7 Dec 2000, Fernando Fraga e Silva wrote:
> 
> > 
> > I couldn't figure how to use the function "contour" by reading the info 
> > manual about this one. I missed a simple example as a pattern to learn to 
> > use 
> > it. Does anyone here could send me a little example about it ?
> > 
> > I need to plot the contour of a function f(x,y).
> > 
> > I'm really thanks .
> > 
> > ---
> > Fernando Fraga e Silva
> > Undergraduated Mechanical Engineering Student from University of São Paulo
> > 
> > 
> > 
> > -------------------------------------------------------------
> > Octave is freely available under the terms of the GNU GPL.
> > 
> > Octave's home on the web:  http://www.octave.org
> > How to fund new projects:  http://www.octave.org/funding.html
> > Subscription information:  http://www.octave.org/archive.html
> > -------------------------------------------------------------
> > 
> > 
> 
> 
> 
> -------------------------------------------------------------
> Octave is freely available under the terms of the GNU GPL.
> 
> Octave's home on the web:  http://www.octave.org
> How to fund new projects:  http://www.octave.org/funding.html
> Subscription information:  http://www.octave.org/archive.html
> -------------------------------------------------------------
> 
> 



-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------